I started programming on the ZX81 - 1kb RAM with a 3.5MHz Z80A CPU. Things have got faster since then :)

I now program in a wide variety of languages: HTML5/JavaScript/CSS3, Python, Java. Over the years I have also extensively used SQL, ML and rules-based rete engines. I'm currently CTO at Pocketmath where we process tens of billions of mobile advertising auctions a day.